Parechiniscus is a monotypic genus of tardigrades in the family Echiniscidae. It was named and described by Lucien Cuénot in 1926. It's only species is Parechiniscus chitonides.
References
Further reading Cuénot, 1926 : Description d'un tardigrade nouveau de la faune française. (Description of a New Tardigrate in French Fauna) Comptes rendus hebdomadaires des séances de l’Académie des sciences, vol. 182, pp. 744–745. Nomenclator Zoologicus info